Ministers must be honest about Russian threat to UK, says former Foreign Office head

Peter Ricketts calls for more resilience in protecting banking, energy and water systems from cyber-assaults Ministers need to be honest with the British public about the immediate threat posed by Russia, which could soon lead to lives being lost, a former national security adviser has said.

Peter Ricketts, who advised David Cameron when he was prime minister, became the latest figure to warn about the scale of the…